Herewith, the most inane conversation I've yet heard between two children under age five. (This occurred while both were riding in a car on what was neither a highway nor a parkway, but a rural country road.)
Younger son: I smell sumfink. You smell dat smell?
Elder son: Dat is the highway dat you smell.
Younger son: No. I smell da parkway, not the highway!
Elder son: No, I am the one who smells the parkway. YOU smell the highway.
Younger son: No! YOU smell the highway. I smell da paaaahhhkway!
Elder son: No, I smell the parkway!
Younger son: I smell the parkway. You smell the highway!
Elder son: I smell the parkway! I always smell the parkway when we go on trips like this!
Younger son: No you do not. You do not smell the parkway. You smell the highway.
Elder son: YOU smell the highway!
Younger son: I am smelling the parkway right now, you!
Elder son: Oh, you give me a break right now!
Younger son: NO, YOU give me a break right now!
Elder son: I have had enough of this. Give me a break, all you people!